Regular BBC Morning Live guest, Dr Ranj Singh, has issued a warning urging people not to rush to the shops for certain medicine if they have the flu. Talking about the virus, it was revealed that figures from NHS England show nearly 5,000 people are being admitted to hospital with flu every day. The doctor and author, said that at this time of year, there is a surge in illness in winter and explains that there are three main strains that we need to know about. He says: "Now when we talk about